diff options
Diffstat (limited to 'src/lib/event_history.h')
| -rw-r--r-- | src/lib/event_history.h | 5 |
1 files changed, 3 insertions, 2 deletions
diff --git a/src/lib/event_history.h b/src/lib/event_history.h index e194f6333..4670e7bfe 100644 --- a/src/lib/event_history.h +++ b/src/lib/event_history.h @@ -1,5 +1,5 @@ /* - Copyright (C) 2017 Carl Hetherington <cth@carlh.net> + Copyright (C) 2017-2019 Carl Hetherington <cth@carlh.net> This file is part of DCP-o-matic. @@ -22,6 +22,7 @@ #define DCPOMATIC_EVENT_HISTORY_H #include <boost/thread/mutex.hpp> +#include <boost/optional.hpp> #include <list> class EventHistory @@ -29,7 +30,7 @@ class EventHistory public: explicit EventHistory (int size); - float rate () const; + boost::optional<float> rate () const; void event (); private: |